| No. | Item | Definition |
|---|---|---|
| 1. | abiding | lasting for a long time |
| 2. | ageless | not seeming to age or change |
| 3. | around-the-clock | continuing all day and night |
| 4. | carved in stone | fixed and impossible to change |
| 5. | cast-iron | very firm or unchangeable |
| 6. | consistent | staying the same over time |
| 7. | continual | happening repeatedly or without interruption |
| 8. | continued | carried on without ending |
| 9. | continuous | uninterrupted over time |
| 10. | customary | usual or habitual |
| 11. | cyclical | recurring in cycles |
| 12. | deathless | lasting forever; never forgotten |
| 13. | deep-rooted | firmly fixed over time |
| 14. | dependable | worthy of trust |
| 15. | determined | firm in purpose |
| 16. | devoted | very loyal and committed |
| 17. | dogged | stubbornly persistent |
| 18. | durable | able to last a long time |
| 19. | enduring | lasting for a long time |
| 20. | entrenched | firmly established and hard to change |
| 21. | equable | steady and not varying |
| 22. | established | accepted or firmly set |
| 23. | eternal | without beginning or end |
| 24. | even | regular and steady |
| 25. | everlasting | lasting forever |
| 26. | extended | lasting longer than usual |
| 27. | faithful | loyal and reliable |
| 28. | firm | steady and not yielding |
| 29. | fixed | set and not changing |
| 30. | flat | not varying in level |
| 31. | frequent | happening often |
| 32. | frozen | fixed and not changing |
| 33. | habitual | done regularly as a habit |
| 34. | hard-and-fast | fixed and not changeable |
| 35. | immortal | living or lasting forever |
| 36. | immutable | unable to be changed |
| 37. | incessant | continuing without pause |
| 38. | indefatigable | tireless and persistent |
| 39. | inflexible | not willing or able to change |
| 40. | ingrained | firmly established and hard to change |
| 41. | invariable | never changing |
| 42. | invariant | unchanged under specified conditions |
| 43. | lasting | continuing for a long time |
| 44. | level | even and not changing |
| 45. | locked in | fixed and unable to change |
| 46. | long-lasting | enduring for a long time |
| 47. | long-term | continuing over a long period |
| 48. | loyal | steadfast in allegiance |
| 49. | maintained | kept at the same level |
| 50. | monotonous | dull through sameness or repetition |
| 51. | nailed down | firmly fixed or settled |
| 52. | never-ending | seeming to go on forever |
| 53. | nonstop | without stopping |
| 54. | normal | usual or ordinary |
| 55. | ongoing | continuing at present |
| 56. | periodic | occurring at regular intervals |
| 57. | permanent | lasting without intended change |
| 58. | perpetual | continuing forever or very long |
| 59. | persevering | continuing despite obstacles |
| 60. | persistent | continuing despite difficulty or delay |
| 61. | predictable | behaving as expected |
| 62. | prolonged | continuing for a long time |
| 63. | recurrent | occurring repeatedly |
| 64. | recurring | happening again and again |
| 65. | regular | happening at fixed intervals |
| 66. | relentless | continuing with intense force |
| 67. | reliable | able to be depended on |
| 68. | repeated | done or occurring again |
| 69. | repetitive | involving repeated recurrence |
| 70. | resolute | firm and determined |
| 71. | rooted | firmly established |
| 72. | routine | regularly repeated |
| 73. | set | fixed or established |
| 74. | settled | fixed and unlikely to change |
| 75. | stable | not likely to change |
| 76. | standard | usual, accepted, or fixed |
| 77. | static | lacking movement or change |
| 78. | stationary | not moving or changing position |
| 79. | staunch | loyal and firm |
| 80. | steadfast | firm and unchanging |
| 81. | steady | firm, regular, or unchanging |
| 82. | still | not moving or changing |
| 83. | tenacious | holding firmly or persistently |
| 84. | tireless | showing no loss of energy |
| 85. | true | loyal and faithful |
| 86. | trustworthy | reliably honest or dependable |
| 87. | unalterable | impossible to alter |
| 88. | unbroken | continuous and uninterrupted |
| 89. | unceasing | never stopping |
| 90. | unchangeable | not able to be changed |
| 91. | unchanged | remaining the same |
| 92. | unchanging | not becoming different |
| 93. | undeviating | not departing from a course |
| 94. | unending | having no apparent end |
| 95. | uniform | staying the same throughout |
| 96. | uninterrupted | continuing without a break |
| 97. | unmodifiable | not able to be modified |
| 98. | unremitting | not slackening or stopping |
| 99. | unshifting | not moving or changing |
| 100. | unvarying | not changing in form or degree |